Located at the University of Calgary, Calgary, Alberta, the Olympic Oval is an award-winning building. Its unique roof system of diagonally intersecting precast concrete arches won a 1987 Prestressed Concrete Institute (PCI) Design Award and a 1987 Post-Tensioning Institute (PTI) Award of Excellence.
Intersecting precast prestressed concrete arches form the lattice-like roof framework of the Olympic Oval. Concrete was chosen as the most economical material for resisting the roof's expected compression loads. Longitudinal reinforcing and post-tensioning is continuous throughout the full length of each arch. Supporting the arches around the perimeter are 59-inch circular concrete columns and 39x71-inch buttresses.